<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>20.生成器函数</title>
</head>
<body>
    <script>
        //生成器其实就是一个特殊的函数
        // 异步编程 纯回调函数 node fs ajax mongodb
        function * gen(){
            //console.log('111')
            yield '一只没有耳朵'; //yield 函数代码的分隔符
            //console.log('222')
            yield '一只没有尾巴';
            //console.log('333')
            yield '真奇怪';
            //console.log('444')
        }
        let iterator = gen();
        console.log(iterator.next());
        console.log(iterator.next());
        console.log(iterator.next());
        console.log(iterator.next());

        for (const v of gen()) {
            console.log(v);
        }
    </script>
</body>
</html>